Air heater for internal-combustion engines



April 1929- N N. I. CLARK 1,709,117

AIR HEATER FOR INTERNAL COMBUSTION ENGINES Filed April 27, 1928 2 Sheets-Sheet l INVENTOR ATTORNEY April 16, 1929.

I N. l. CLARK AIR HEATER FOR INTERNAL COMBUSTION ENGINES Filed April 27, 1928' a .4 I I I I'm a M 2 Sheets-Sheet 2 wrmzss'w INVENTOR ATTOR NEY Patented Apr. 16, 1929.

UNITED STATES 1,709,117 Parser orFicE.

NOLON I. CLARK, OF SEMINOLE, GKLAHOMA.

AIR HEATER FOB INTEBNAL-CO-IEBUSTIQN ENGINES.

Application filed April a7, 1928. Serial No. 273,356.

This invention relates to an attachment for an internal combustion engine, the general object of the invention being to provide means for controlling the air supply to the carbureter of the engine and also for heating the air and screening it before it passes to the carbureter so as to increase the etficiency of the engine.

This invention also consists in certain other features of construction'and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointedout in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view showing the device attached to a carburetor and to a portion of the exhaust manifold.

Figure 2 isa planview of Figure 1.

Figure 8 is a section on line 33 of F igure 2.

Figure 4: is a section on line 4-4 of Figure 2. i

Figure 5 is a section on line 55 of Figure 3. c

In these views, the numeral 1 indicates an elongated casing which has an inlet opening 2 at one end thereof and the top and bottom portions of this end of the casing are provided with holes 3 through which a part of the eX- haust pipe 4 passes. A substantially Y shaped opening 5 is also formed in one side of the casin which communicates with the openings 3 for facilitatingthe placing of the casing on the pipe; The casing is clamped to brace 7.

A partition 8 of substantially L-shape is placed in the other portion of the casing so as to form an air chamber 9, one portion of the partition forming the top of the chamber,

with this portion spaced from the top of the.

casing. This portion of the partition is formed with openings 10 through which air can pass from the casing into the chamber and the passage of air is controlled by the rotary shutter 11 pivoted to the top of the chamber and operated from a point adjacent the drivers seat throu h means which in ciudes a wire 12 which has one end fastened to the shutter.

the pipe by means of the U-bolt 6 and the Thus the shutter can beopened or closed or moved to a partly open position so as to regulate the amount of air passin into the chamber.

A cap 13 fits in the extended lower end of the air chamber and has an internal flange 14 which receives a ring 15 placed on the base of the frusto-conical screen 16 which is located in the air chamber. The cap ,is formed with an elbow 17 which is adapted to be connected by the hose 18 to the air intake 19 of the carbureter A.

The casing is provided with a hinged cover part 20 which is arranged above the air chamher so that access to the parts may be had by opening this cover portion, suitable latch means 21 being provided for holding the cover part in closed position. The cap 13 is also detachably connected with the casing by the latch means 22.

From the foregoing it will be seen that air, entering the casing through the opening 2, will come in contact with that part of the exhaust pipe which passes through the casing so that the air will be heated. Then the air passes into the chamber and through the screen which removes all foreign matter from the air and then the air passes into the 3211- bureter. Thus I have provided means for not only regulating the amount of air passing into the carbureter, but also means for heating the air and screening it before it enters the carbureter. This device can easily and quickly be put in place and through its use,

the eiiiciency of the motor is greatly increased.

'It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

It is to be understood that I may make changes in the construction and in the com bination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

lVhat I claim is:

1. A11 attachment for a motor vehicle comprising a casing having a part surrounding the exhaust pipe of the vehicle, said part having an opening therein for the admission of air so that the air is heated by coming in contact with the exhaust pipe, a chamber in the casing into which the air passes after being heated, means for regulating the amount of airpassing into said chamber, a screen in said chamber for screening the air and means for conducting the air, after being screened, into the .carbureter.

V 2. An attachment for a motor vehicle comprising a casin having a part surrounding and attached to a part of the exhaust pipe of the motor, a chamber formed in another part of the casing and receiving air from the first part, said first part having an air inlet opening therein so that the air is heated before it enters said chamber, a rotary shutter for controlling the passage of air into the chamber, means for actuating the shutter from a point adjacent the drivers seat, a cap fitting over the loWer part of the chamber, means for removably holding the cap in place, a screen in said chamber supported by the cap, an elbow carried by the cap and means for connecting the elbow to the air intake of the carbnreter.

In testimony whereof I afiiX my signature.

NOLON I. CLARK. 

